TWI624589B - Low head large flow channel turbine - Google Patents

Abstract

A low-head large-flow Chuanqu turbine includes a water guide seat, a water wheel and a gate piece, the water guide seat has a top plate and a bottom plate, and the upper and lower sides are respectively a water inlet and a water outlet, and the middle is a water wheel, and the other two are first. The side plate and the second side plate respectively extend the first water guiding wall and the second water guiding wall to the water wheel edge toward the inside; the water wheel has a rotating shaft and a plurality of blades, and is disposed between the water wheel of the water guiding seat; the gate piece is a cylindrical shell piece. It can slide through the arc-shaped groove of the water guide seat top plate and slide on the upstream edge of the water wheel, and the gate piece slides to adjust the gate opening degree to adjust the rectification water break area, and control the inflow flow rate and shut down the unit, and can adjust the upstream water to be high according to the flow rate. The water level state enables stable and high-efficiency operation of flow changes, achieving a simple structure and easy installation, and is suitable for direct installation in rivers and channels.

Description

Low head large flow Chuanqu turbine

The invention relates to a vertical axis turbine structure with high head, large flow and high flow rate, and particularly relates to a structure with simple structure, easy installation and simple operation, and can be directly assembled in rivers and channels to generate electricity. The low head and large flow Chuanqu turbine.

A hydro turbine is a device in a hydroelectric power station that converts the energy of a water stream into kinetic energy and then into mechanical energy. Generally, the medium and large hydroelectric power stations with the most common medium and high heads are used to concentrate the river water by the river dam, and let the water be led to the turbine in the plant through the water diversion line, impact the turbine water wheel, and be connected by the turbine. The generator generates electric energy, that is, the general traditional pipeline type turbine, which mainly represents turbines such as Pelton and Francis. The efficiency of these conventional pipeline turbines is as high as 0.8~0.93e, but It is not suitable for direct installation in rivers or channels. Therefore, construction projects will inevitably include many civil engineering facilities such as water blocking, diversion lines and workshops, and increase the engineering cost. In the case of low water head and large flow hydraulic conditions, such a tradition is adopted. The size of the pipeline turbine will become quite large. Therefore, there are few such low-head and large-flow hydraulic conditions in the market. The traditional pipeline-type turbines are expensive, not economical, and there are almost no cases of manufacturers.

The traditional pipeline-type hydro-generator units with a low head of 5 meters to 30 meters include turbines such as Tubular, Bulb and Kaplan. Most of them need to be led to the river by pressure pipes. Or set the turbine outside the channel, low head flow below 5 meters Under hydraulic conditions, these turbines are actually not suitable for direct installation in rivers or channels.

In recent years, some hydropower units that have not been successfully developed commercially can be directly installed in rivers or channels, and can be applied to low head conditions. Among these units, some of the units that imitate and improve the resistance units from traditional pipelines have higher efficiency. However, commodities on the market can only handle small flows. In the case of low head and large flow, the settings often fail to meet the flow demand requirements. It is necessary to change the channels to set up multiple sets of these turbines, and there are still frequent flows to be processed. Overflow problems, such as special order large-size units, are also economically unsatisfactory due to high prices; some of these non-resistance units that can pass large flow at low heads are mostly inefficient, about 0.1~0.4e ( The turbine efficiency e is: e = W '/ W ), due to the low energy output and poor economy, and these units still have their own set conditions, so it is still necessary to consider whether they can meet the unit setting conditions before they can be used. These units, including efficiency and unit structure, still have a lot of room for improvement.

There is a type of turbine called a through-flow turbine that can pass a slightly larger amount of water in a low head condition. Unlike most types of turbines where water flows radially or axially, it allows water to pass directly through the unit's turbine blades. As a type of waterwheel derivative, the water flows tangentially from a small angle of the single side of the turbine, and then flows into the water wheel, and then the water leaves the unit from the opposite side of the turbine. This kind of design will make the water flow into and out of the water wheel, and there will be impact force when the water is removed. The reaction force when the water is discharged also has the benefit of the second rotation of the water wheel. This type of through-flow turbine was first developed by Professor Banki Donat of the United States, and obtained the US1436933A patent in 1919. Later, in 1986, other manufacturers improved the design of the guide wing to obtain the US457956A patent and developed the horizontal Widely successful commercial use of the cross-flow, which is a low-head, conventional line-type hydro-generator set that is not suitable for direct installation in rivers or channels, and such through-flow turbines are The horizontal axis is designed, and the inlet of the runner is not large. Only let small flow flow in, so that the water wheel part is exposed to the air, in order to obtain higher efficiency, the commercial product efficiency is about 0.85~0.75e, and then there are more changes from the horizontal axis through the flow type of research, such as change The range of the water inlet of the turbine is increased, so that more water enters the water wheel and reduces the proportion of the air zone of the water wheel, which in turn leads to a decrease in efficiency; if the water wheel of the turbine is completely immersed in water, the efficiency is improved. Lower. Therefore, the development of the through-flow turbines is developed in a horizontal axis. If the water turbine mechanism is directly installed on the channel, it will generally be similar to the waterwheel. The waterwheels that are suspended are mostly located on the water surface, and are also convenient to send. The motor is located on the shore. The water turbine is fully immersed in water and the operation efficiency is low. Therefore, there are few cases in which the water wheel is directly immersed in the river and the channel.

The vertical shaft through-flow turbine is used in rivers and channels. Although it is inefficient due to immersion in water, the generator can still be installed on the water surface. The equipment is simple in structure, easy to set up, and easy to operate. The maintenance is simple, and the unit does not need to set up new water diversion roads and workshops, so it can save a lot of civil engineering costs. It has good economy due to the balance between efficiency and installation cost. It has been gradually researched and applied in rivers and channels. .

In order to make the vertical shaft through the flow turbine suitable for installation in rivers and channels such as low water heads, such as the "Hydroelectric Power Plant" of the Republic of China Patent Gazette No. I472679, the hydropower installation includes blocking the flow of water on the waterway for storage and The water collecting plate of the water inlet of the water inlet, and the movable gate which can increase or decrease the water flow cross-sectional area of the water flow flowing from the water inlet to the front end of the rotating blade of the vertical axis turbine, and increase or decrease the water flow by opening and closing the movable gate The cross-sectional area can be changed by changing the water level on the upstream side and the opening area of the orifice, adjusting the flow rate, or cutting off the flow of water to the vertical axis turbine to stop the rotation of the blades. However, in the actual operation, the above patent still has a partial loss. Although it has a movable gate to increase or decrease the cross-sectional area of the water passage, the moving direction of the movable gate is an arc-shaped movement along the periphery of the vertical axis turbine. So that the gate occupies a lot of rims of the water wheel Accumulation, so that the inflow and outflow range of the water wheel is reduced, affecting the flow rate of the turbine; and because the flow direction of the water wheel is not the preferred angle recommended by the flow turbine research institute, the commercial product efficiency is about 0.3~0.4e. Not high. In addition, when the cross-sectional area of the water passing through is adjusted, it is not possible to generate a relatively stable rotational speed for different flow rates, because it can be seen in the patent diagram that the purpose is only to adjust the impact turbine by the combination of the movable gate and the opening and closing door leaf. The amount of water is not the angle of water that controls the entry of water into the water wheel. Therefore, when the movable gate is fully closed, water from the upstream side cannot enter the interior of the turbine. When the movable gate is opened, water can flow from between two adjacent turbines. Flowing through, so at different flow rates, the different opening degrees of the gates make the water flow into the vertical axis water wheel. The average water inlet angle is different. The uneven rotation speed and output force of the water wheel need to be controlled by other equipment. The machine still has room for improvement.

In view of the above needs, the present invention has devised a new low head and large flow channel turbine.

The main object of the present invention is to provide a turbine with low power and high flow rate, such as simple structure, easy to adjust environment, easy to install and operate, and can be directly installed in rivers, rivers, rivers, channels, tides and the like. structure.

Another object of the present invention is to provide a turbine structure that can adjust the upstream water to a fixed high water level according to the state of water quantity, and can operate stably and efficiently at different flow rates.

In order to achieve the above object, the low-head high-flow Chuanqu turbine of the present invention comprises: a water guide seat, a water wheel disposed in the water guide seat, and a cylindrical shell shape and movable through the water guide seat to control the flow rate. a gate piece, wherein: the water guide seat has a bottom plate and a top plate, and a hollow cylindrical water wheel is in the middle A first side plate and a second side plate are respectively disposed on the two sides, and the first side plate and the second side plate respectively extend from the first water guiding wall and the second water guiding wall to the central water wheel edge toward the inner spire. The first water guiding wall and the second water guiding wall end are respectively provided with a sliding slot for sliding the sliding door piece, and the first water guiding wall and the second water guiding wall are oppositely disposed opposite to the water wheel axis, and the water guiding seat is a water wheel. The upper and lower sides are respectively an upstream section and a downstream section, and the outermost sections of the upstream section and the downstream section are respectively a water inlet and a water outlet, and the top plate is provided with an arc-shaped through groove; the water wheel has a plurality of circular arrangements. a blade and a rotating shaft, wherein the two ends of the rotating shaft are respectively coupled to the bottom plate and the top plate of the water wheel of the water guiding seat by a bearing group; the gate piece is a cylindrical shell shape, and can slide through the curved through groove of the water guiding seat top plate At the upstream edge of the water wheel, the two ends are respectively slid to the first water guiding wall and the second water guiding wall end sliding groove.

In a preferred embodiment of the invention, the top plate of the water conduit is a separable or partially separable structure to facilitate installation of the water wheel.

In a preferred embodiment of the present invention, the upstream section of the water conduit further has at least one or more upstream splitter plates, and the upstream splitter plate extends toward the first water guide wall as a water wheel edge of a spout arc plate, and water guiding The downstream section of the seat is further provided with one or more downstream splitter plates, and the downstream splitter plate extends downstream from the edge of the water wheel to the water outlet with the interface arc plate.

In a preferred embodiment of the present invention, the top plate and the bottom plate cooperate with the central water wheel of the water guide seat, and respectively have a shaft hole and a bearing set, and the water wheel rotating shaft respectively passes through the equal shaft holes, the bearings The group connects the water wheel shaft to the bottom plate and the top plate.

In a preferred embodiment of the present invention, the first water guiding wall and the second water guiding wall end are respectively provided with a sliding slot, and the two sides of the sliding door piece are respectively provided with a sliding bar sliding on the sliding grooves, and a gate piece Providing a reinforcing strip adjacent to the end of the arc plate of the upstream splitter plate The door piece can provide positioning and supporting force by the nozzle arc plate.

In a preferred embodiment of the present invention, the shutter piece is further coupled to a driving mechanism, and the driving mechanism drives the shutter piece to generate a reciprocating displacement.

In a preferred embodiment of the present invention, at least one or more layered plates are further disposed between the water guiding seat top plate and the bottom plate, and the layering plate is provided with a water supply wheel and a gate piece passing through the water wheel. The water wheel has an upper ring piece and a lower ring piece, and the blade is disposed between the upper ring piece and the lower ring piece, and at least one or more layered ring pieces are further disposed between the upper ring piece and the lower ring piece.

In a preferred embodiment of the present invention, the layered ring piece is further provided with a hole for allowing water entering the water wheel to flow up and down the layered ring piece.

In a preferred embodiment of the present invention, a lower drainage space is disposed under the water guide bottom plate, and the lower ring piece is further provided with a drainage hole, so that water entering the water wheel can be discharged from the lower ring piece to the lower drainage space. Then drain from the water outlet.

In still another preferred embodiment of the present invention, the water wheel may be a vertical shaft or a tilting shaft runner.

In order to simplify the drawing, it is easy to observe and understand. The following drawings omits the main features of the invention, including the accelerator, the generator or the transmission mechanism and the gate driving mechanism connected to the water wheel.

1‧‧‧Water guide

11‧‧‧floor

111‧‧‧Axis hole

112‧‧‧bearing group

12‧‧‧ top board

121‧‧‧Axis hole

122‧‧‧bearing group

123‧‧‧ curved slot

13‧‧‧First side panel

131‧‧‧First water guide wall

132‧‧‧Chute

14‧‧‧ second side panel

141‧‧‧Second water guide wall

142‧‧ ‧ chute

15‧‧‧Upstream

151‧‧‧Upstream manifold

152‧‧‧ spout arc plate

15a‧‧‧ Inlet

15b‧‧‧Upstream flow path

15c‧‧‧ spout

16‧‧‧Downstream

161‧‧‧Downstream manifold

162‧‧‧Interface arc plate

16a‧‧‧Outlet

16b‧‧‧ downstream flow path

17‧‧‧Layered board

171‧‧‧ round hole

18‧‧‧Water wheel room

19‧‧‧Under drainage space

2‧‧‧Waterwheel

21‧‧‧ shaft

22‧‧‧ blades

23‧‧‧Upper Ring

24‧‧‧ Lower ring film

241‧‧‧Drainage holes

25‧‧‧Layered ring

3‧‧‧gate film

31‧‧‧ slider

32‧‧‧Strength

4‧‧‧Flap

41‧‧‧High section

5‧‧‧ energy dissipation tank

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is a perspective cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is a top cross-sectional view of a preferred embodiment of the present invention.

Fig. 5 is a longitudinal sectional view showing a preferred embodiment of the present invention for providing a water deflector on the upstream side of the unit.

Figure 6 is a schematic view of fluid flow and water wheel operation in accordance with a preferred embodiment of the present invention.

Figure 7 is a partial schematic view of another preferred embodiment of the present invention for providing a reinforcing strip to a shutter panel.

Figure 8 is a partial schematic view of another preferred embodiment of the present invention for use in a tidal situation.

Figure 9 is a schematic view showing the arrangement of another preferred embodiment of the present invention in the case of a dissipating tank.

Figure 10 is a graph of experimental data demonstrating the ability to handle large flows at low head conditions.

Figure 11 is a graph showing the experimental data of the unit efficiency of the different scale units of the present invention.

Figure 12 is a graph showing experimental data demonstrating that the unit can operate efficiently in the case of flow changes.

In order to clearly understand the contents of the present invention, the present invention includes a water guide seat 1, a water wheel 2 and a shutter piece 3, as shown in the following description, together with the following description, wherein: the water guide seat 1 is in the middle a hollow water wheel room 18, above and below the water tank 18, an upstream section 15 and a downstream section 16, respectively, and the outermost openings of the upstream section 15 and the downstream section 16 are respectively a water inlet 15a and a water outlet 16a; the water conduit The upper and lower sides include a bottom plate 11 and a top plate 12, and the top plate 12 is separable or partially separable to facilitate the installation of the water wheel 2. The top plate 12 and the bottom plate 11 are respectively provided with a shaft hole 111, 121, and are provided separately. The bearing sets 112, 122 can be combined to match the installation of the water wheel 2. The top plate 12 is provided with an arc-shaped through slot 123 for the gate piece 3 to pass through and slide; a first side plate is respectively arranged on both sides of the water guiding seat 1 13 and a second side plate 14, the first side plate 13 and the second side plate 14 respectively extend toward the inner spire to have a first water guiding wall 131 and a second water guiding wall 141 to the edge of the water wheel 18, at the end of the first water guiding wall 131 and the second water guiding wall 141, respectively, a sliding groove 132, 142 for sliding the shutter piece 3; and an upstream section 15 of the water guiding seat 1 Further, at least one or more upstream splitter plates 151 extend from the upstream runner plate 151 toward the front of the water wheel to a front edge of the sprue arc plate 152 to the water wheel bay 18.

The water wheel 2 is disposed in the water wheel room 18 of the water guiding seat 1 and has a rotating shaft 21 and a plurality of annularly arranged blades 22, and the two ends of the rotating shaft 21 are respectively connected to the bottom plate of the water guiding seat 1 by bearing sets 112 and 122 respectively. 11 and the top plate 12, that is, the rotating shaft 21 of the water wheel 2 respectively pass through the equiaxed holes 111, 121, and the bearing sets 112, 122 connect the water wheel rotating shaft 21 to the bottom plate 11 and the top plate 12.

The gate piece 3 is in the shape of a cylindrical shell and is movably disposed on the top plate 12 of the water guide seat 1, that is, the gate piece 3 passes through the arcuate through groove 123 of the top plate 12, and a sliding strip 31 is respectively disposed at two ends of the gate piece 3, The sliders 31 are slid to the first water guiding wall 131 and the sliding grooves 132 and 142 at the end of the second water guiding wall 141. At the same time, the shutter piece 3 is further coupled to a driving mechanism, which may be a human power transmission or A device such as mechanical power can drive the shutter piece 3 to generate a reciprocating displacement.

It should be noted that, depending on the actual application location, or the actual conditions such as different water volume and water depth, the water conduit 1 is further disposed between the top plate 12 and the bottom plate 11 and further provided with at least one or more layered plates 17 . The layered plate 17 is provided with a water supply wheel 2 and a circular hole 171 through which the gate piece 3 passes through the water wheel room 18; at the same time, the water wheel 2 has an upper ring piece 23 and a lower ring piece 24, and the upper ring piece 23 and the lower ring piece The blades 22 are disposed between the upper ring pieces 23 and the lower ring pieces 24, and at least one or more layered ring pieces 25 are further disposed. The layered ring pieces 25 are further provided with holes for the water wheel 2 The water in the water can be circulated in each layer, which can increase the efficiency of the unit.

Subsequent name definitions to facilitate explanation, "upstream flow path" 15b: by water inlet The flow path space from the 15a to the upstream edge of the water wheel room 18, that is, the water guide seat 1 in the upstream section 15, is the upstream section of the bottom plate 11, the upstream section of the top plate 12, the upstream section of the first side plate 13, and the upstream section of the first water guiding wall 131. a flow path space formed by the upstream portion of the second side plate 14 , the upstream portion of the second water guiding wall 141 , the upstream flow dividing plate 151 and the nozzle arc plate 152 ; the "downstream flow path" 16 b : from the downstream edge of the water wheel room 18 to the water outlet 16 a The flow path space, that is, the water guide seat 1 in the downstream section 16, is composed of a downstream section of the bottom plate 11, a downstream section of the top plate 12, a downstream section of the first side plate 13, a downstream section of the first water guiding wall 131, and a downstream section of the second side plate 14 and The flow path space formed by the downstream portion of the second water guiding wall 141; the "spray opening" 15c: the "upstream flow path" 15b is close to the narrowest region of the water wheel 2, and its width is significantly smaller than the upstream flow path 15b.

In the implementation of the present invention, the entire section of the retaining water channel (river or channel) such as the water retaining plate 4 and the elevated section 41 is disposed on the upstream side of the water turbine 1, and the gate block 3 is closed and the water upstream is blocked to form a higher water level. The water storage tank adjusts the opening degree of the gate piece 3 according to the amount of water during operation, and the water flows from the upstream section water inlet 15a into the upstream flow path 15b which is tapered by the water passage section, and is closest to the section of the nozzle port 15c of the water wheel 2 It is narrow enough to allow the inflowing water to be fully converted into kinetic energy. With the upstream splitter plate 151 and the extended spout arc plate 152, it can maintain an efficient and constant impact angle, and impact, inflow and rotate the water wheel 2 with high-speed water flow. At the same time, the generator set (not shown) connected to the upper part is driven to generate electric power; the water wheel 2 enters the water area to take a large range, and the output can be increased by the large water volume, and the water inside the rotating water wheel 2 is discharged from the gap of the plurality of blades 22, and discharged. The reaction force also pushes the water wheel 2 to rotate for the second time; the water discharged from the water wheel 2 is discharged to the downstream section 16 of the water guiding seat 1, and the water guiding area 16b of the downstream section 16 is obviously enlarged by a small amount, and the water can be quickly increased. The water discharged from the wheel 2 is led to the downstream of the water outlet 16a. High overall water flow.

Please refer to Figure 5 to help explain the performance of the present invention. The total head is Ho, the effective head is H after deducting the head loss, the gravitational acceleration is g, the flow coefficient of the jet 15c is C, and the theory of the cross section of the jet 15c The flow rate V is: The total water passing area A formed by each nozzle 15c and the gate opening degree, the water passing amount Q is: The theoretical power W is: W = Q × g × H. If the measured power W is measured, the turbine efficiency e is: e = W '/ W .

Referring to FIG. 7, a partial schematic view of another preferred embodiment of the present invention for providing a reinforcing strip on a shutter panel is characterized in that: FIG. 1 to FIG. 6 are characterized in that: the shutter piece 3 is provided with a a reinforcing strip 32 for positioning the end of the nozzle arc plate 152 of the upstream splitter plate 151, whereby when the water flows through the gate piece 3, the gate piece 3 can be partially supported by the nozzle arc plate 152 of the upstream splitter plate 151. The situation that the gate piece 3 is excessively deformed and swayed is prevented.

Please refer to FIG. 8 (please refer to FIG. 2 at the same time), which is a partial schematic view of another preferred embodiment of the present invention applied to the tidal situation. The features of the first to sixth figures are as follows: The downstream section 16 of the water guiding block 1 is further provided with one or more downstream splitter plates 161. The downstream flow dividing plate 161 extends upstream of the first water guiding wall 131 as an interface arc plate 162; the "downstream flow path" 16b is a guiding water The range of the seat 1 in the downstream section 16 formed by the first side panel 13, the second water guiding wall 141 and the second side panel 14; the water discharged when the water wheel 2 is in operation is discharged to the downstream section 16 of the water guiding seat 1, because The flow cross section of the downstream flow path 16b is gradually expanded to enable an even distribution and a smooth diffusion flow.

This embodiment can also be applied to the occasion of tidal power generation. Because the tidal power generation is the upper and lower water level, it will be interchanged with the tide at different times, and the two ends will be interchanged at different time intervals. Therefore, the structure of the water guide seat 1 is also In the center of the water wheel 2, the upper and lower sides are completely opposed to the dislocation position. It should be noted that when the upstream section 15 is provided with the upstream splitter plate 151 and the downstream section 16 is provided with the downstream splitter plate 161, the upstream splitter plate 151 and the downstream splitter plate 161 The number of settings, based on the actual The state of the water flow is set. Although the description is made by providing one upstream manifold 151 and the downstream manifold 161 in the illustration of the present embodiment, the number of installations is not limited.

Please refer to FIG. 9 , which is a schematic diagram of another preferred embodiment of the present invention applied to the case of the energy dissipation slot. The present invention is disposed in the case where the height difference and the energy dissipation slot 5 are provided, and the upstream section is provided with a water deflector. 41. On the downstream side of the drop, an energy dissipation tank 5 lower than the riverbed surface (or the bottom surface of the canal) is dug, and the bottom surface of the water wheel provided by the present invention is generally disposed on the riverbed surface (or the bottom of the channel), and the energy dissipation tank 5 There is a suitable space for drainage from below, and a perforated or fan-shaped drainage hole 241 may be arranged between the ring pieces 24 under the water wheel 2, and a high lower drainage space 19 structure is arranged in the space formed below the water guiding seat 1. For example, a drain tank, a height space, or the like is provided, so that the water in the water wheel 2 can flow downward from the drain hole 241 of the lower ring piece 24 to the lower drain space 19, and then discharged to the downstream side of the drain port 15a, thereby increasing the displacement and the unit. effectiveness.

Please refer to FIG. 10, which is an experimental data diagram demonstrating that a large flow rate can be processed in a low head condition. In the case of a unit diameter (1M) water wheel and a unit head (1M), the units of different gate opening conditions are shown. The flow rate data can be processed as shown in Fig. 10. When the gate is fully open at a speed of about 30 rpm, the flow rate of about 1.7 CMS can be processed, and it is confirmed that the unit of the present invention can handle large flow rate under low head conditions and display the flow rate that can be processed. Compared with the traditional pipeline type turbine, it has a large flow rate and is suitable for direct installation in rivers and channels. Although the efficiency is worse than that of the traditional pipeline type turbine, the structure is simple and there are many civil facilities. In the case of low head and large flow, the cost is low. It is much lower than the traditional pipeline turbines, and the economy is better than the traditional pipeline turbines.

Please refer to FIG. 11 , which is an experimental data chart of the unit efficiency of the different size units of the present invention. The unit sizes of the different sizes of the present invention are small and large, and the unit efficiency is about 0.4 to 0.6. , the efficiency is worse than the traditional pipeline turbine, but It is better than other low-head large-flow units that are directly installed in rivers or channels.

Please refer to FIG. 12 , which is an experimental data diagram for verifying that the unit can operate efficiently in the flow change condition. The invention proves that when the flow rate changes greatly, the single unit can still be used even if the flow rate only has a maximum processing flow rate of 25%. It operates in an efficient area and can be applied to rivers or channels with large flow changes in different seasons.

In summary, the present invention does have the following advantages:

1. The upstream section 15 forms a jet opening 15c, and the water energy can be fully converted into kinetic energy to form a high-speed water flow smoothing impact wheel 2 on one side, and the water in the water wheel 2 is discharged from the other side to form a reaction thrust, including impact force and reaction. The two forces of the thrust work together to efficiently rotate the water wheel, and at the same time drive the connected generator set to generate electricity.

2. The water passage section of the downstream flow path 16b of the downstream section 16 is gradually expanded from the upstream to the downstream, and the water outlet 16a has the widest water passage section, so that the water discharged from the water wheel 2 can be evenly distributed and smoothly diffused in the downstream flow path. In 16b, it flows to downstream channels or rivers.

3. The gate piece 3 reciprocates to adjust the opening of the gate to control the flow area of the jet flow port, and to control the inflow flow rate and keep the upstream water at a fixed high water level, so that the turbine can be stable and high in different flow conditions. The efficiency is easy to operate, so it can be applied to environments with large flow changes in different seasons, with high applicability and high utilization rate.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention All should be covered by the patent of the present invention. In summary, the low-head high-flow Chuanqu turbine of the present invention has the patented invention and the use value of the industry; the applicant applies for an invention patent in accordance with the provisions of the Patent Law.

Claims (14)

A low head large flow Chuanqu turbine comprises: a water guide seat having a cylindrical hollow water wheel interior, and an upstream section and a downstream section respectively on the upper and lower sides of the water wheel, the upstream section and the downstream section The outermost side is a water inlet and a water outlet; the water guiding seat has a bottom plate, and each of the two sides of the bottom plate has a first side plate and a second side plate, and is disposed on the first side plate and the second side plate by a top plate. The first side plate and the second side plate respectively extend in a spire shape with a first water guiding wall and a second water guiding wall to the outer edge of the water wheel, and the first side plate and the second side plate are provided with chutes at the ends. The first water guiding wall and the second water guiding wall are arranged opposite to each other by the center of the water wheel, so that the upstream section forms a smooth and tapered flow path and a jet port which is aligned with the one side of the water wheel, and the downstream section forms a The smooth and divergent flow path is further provided with a curved through groove; the water wheel is disposed in the water wheel between the water guide seat, and has a rotating shaft and a plurality of blades, and the two ends of the rotating shaft respectively pass through the top plate and the bottom plate a shaft hole connected to the water guide by a bearing set a bottom plate and a top plate of the water wheel; a gate piece having a cylindrical shell shape, which can slide through the arc-shaped through groove of the water guide seat top plate and slide on the upstream edge of the water wheel, and the two ends of the gate piece slide on the first water guide wall respectively And the second water guiding wall end chute, whereby the gate piece slides to adjust the opening degree of the gate, adjusts the flow break area to control the water flow rate of the water wheel and shut down the operation of the unit, and further adjusts that the upstream water is in a high water level state. The low head large flow Chuanqu turbine according to claim 1, wherein the upstream section of the water guide seat further has at least one or more upstream split plates, and the upstream splitter plate extends toward the water wheel to form a spout arc plate. The upstream section is formed with a plurality of smooth and tapered flow paths and aligned with the jet ports on one side of the water wheel, so that the upstream water can be cut at a small angle to a high-speed smooth and stable impact water wheel. The low head large flow Chuanqu turbine according to claim 1, wherein the downstream section of the water guide seat further has one or more downstream split plates, and the downstream splitter plate faces the water. The wheel extends as an interface arc plate, which allows the water wheel to discharge horizontally and smoothly to the water outlet. The low head large flow Chuanqu turbine according to claim 1, wherein the top plate is separable or partially separable, so that the water wheel is conveniently installed. The low-head large-flow Chuanqu turbine according to the first aspect of the patent application, wherein the surface of the gate piece is further provided with a reinforcing strip, so that the gate piece can be positioned and strengthened by the end of the arc plate of the upstream splitter plate. The low-head large-flow Chuanqu turbine according to the first aspect of the patent application, wherein the gate piece is further connected with a driving mechanism, and the driving mechanism drives the shutter piece to generate a reciprocating displacement. For example, the low-head high-flow Chuanqu turbine described in claim 1 is characterized in that an accelerator and a generator or other transmission mechanism are connected above the water wheel to obtain energy for use. The low head large flow Chuanqu turbine according to claim 1, wherein the water guiding seat is further provided with at least one or more layered plates between the top plate and the bottom plate, and the layered plate is disposed between the water wheels. Allow the water wheel and the gate piece to pass through the round hole. For example, the low-head large-flow Chuanqu turbine described in the first paragraph of the patent application includes a water baffle or a heightening plate on the upstream side of the water guiding seat to block the waterway section and cooperate with the gate piece to control the storage. The upstream water forms a higher water level and increases energy. The low-head large-flow Chuanqu turbine according to claim 1, wherein the water wheel has an upper ring piece and a lower ring piece, and a plurality of annularly arranged blades are arranged between the upper ring piece and the lower ring piece, and the upper ring piece is provided. At least one or more layered ring sheets are further disposed between the lower ring sheets. The low head large flow Chuanqu turbine according to claim 10, wherein the layered ring piece is further provided with a hole through which the water can flow between the layers. The low head large flow Chuanqu turbine according to claim 10, wherein the lower ring piece further comprises a drainage hole, and a lower drainage space is arranged below the water guide seat to allow the water to enter The water in the wheel can flow downward from the lower ring drainage hole through the lower drainage space to the outside of the water outlet. For example, the low head large flow Chuanqu turbine described in claim 1 is a vertical shaft water wheel. For example, in the low-head high-flow Chuanqu turbine described in claim 1, the rotational direction configuration of the turbine unit may be a clockwise direction or a counterclockwise direction.